CVE-2026-46627
MEDIUMTwig: Sandbox resource exhaustion via unbounded `for` / `range()`
Title source: cnaDescription
Twig is a template language for PHP. Prior to 3.26.0, the Twig sandbox does not prevent a template from consuming CPU, memory, or wall-clock time, even under the strictest allow-list, allowing untrusted templates to cause resource exhaustion. This issue is addressed in version 3.26.0 by documenting that the sandbox does not protect against resource exhaustion.
References (3)
Core 3
Core References
X_Refsource_Confirm x_refsource_confirm
https://github.com/twigphp/Twig/security/advisories/GHSA-923g-j88x-j34q
X_Refsource_Misc x_refsource_misc
https://github.com/twigphp/Twig/commit/6bfa285e2f98651adb7aa480bf83a741d154f09f
X_Refsource_Misc x_refsource_misc
https://github.com/twigphp/Twig/releases/tag/v3.26.0
Scores
CVSS v3
6.5
EPSS
0.0039
EPSS Percentile
31.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-400
Status
published
Products (2)
symfony/twig
< 3.26.0
twigphp/Twig
< 3.26.0
Published
Jul 14, 2026
Tracked Since
Jul 15, 2026